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UID:0-258@aerospace.technion.ac.il

DTSTART;TZID=Asia/Jerusalem:20210222T123000

DTEND;TZID=Asia/Jerusalem:20210222T133000

DTSTAMP:20230525T063318Z

URL:https://aerospace.technion.ac.il/events/nozzle-aerothermodynamic-desig
 n-for-a-plasma-heated-supersonic-wind-tunnel/

SUMMARY:Nozzle Aerothermodynamic Design for a Plasma Heated Supersonic Wind
  Tunnel
DESCRIPTION:Lecturer:Nir Bratman\n Faculty:Department of Aerospace Engineer
 ing\n Institute:Technion – Israel Institute of Technology\n Location:htt
 ps://technion.zoom.us/j/98199900410\n Zoom: \n Abstract: \n Details: \n Hi
 gh-enthalpy arc-heated supersonic wind tunnels are characterized by test g
 ases that are heated by a high-current electric arc and then expanded and 
 accelerated through a convergent-divergent nozzle. In this work\, a Mach 4
  supersonic nozzle was designed for the Technion Arc-Plasma wind Tunnel (T
 APT) according to two different working point conditions characterized by 
 different plenum enthalpies and pressures. The objective was to obtain ide
 ally expanded gas with no shock wave formation at the nozzle exit and acco
 mpanying low nozzle temperatures. The initial design was performed using a
  simplified approach\, enabling the examination of feasible design paramet
 ers\, which were subsequently validated using CFD and finite element struc
 tural simulations. The simplified design approach was subdivided into an a
 erodynamic component (method of characteristics)\; semi-empirical aerodyna
 mic-heating predictions\;  empirical nozzle cooling-jacket performance pr
 edictions\; and structural considerations (based on the pressure and therm
 ally induced stresses). The simplified result showed excellent agreement w
 ith CFD predictions and finite element structural simulations. On this bas
 is\, a nozzle design procedure was proposed while taking relatively high s
 afety factors into account. The methodology developed in this work is inte
 nded to support the facility for all future nozzle designs.\nZoom Meeting
CATEGORIES:Seminars
LOCATION:https://technion.zoom.us/j/98199900410

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